This article is a brief about Sputnik 1-the first artificial satellite.
|Sputnik 1 was launched into orbit by the Soviet Union on 4 October 1957. It was 23 inches in diameter-a polished sphere with four radio antennae to broadcast radio signals. The launch of Sputnik 1 created a race between the Russians and Americans, which became a space race. It was to dominate the space medium by better technological developments. It became a part of the larger cold war. The satellite was launched from the Baikanur cosmodrome and travelled at a speed of 29,000 kilometres per hour. It took 96.2 minutes to complete orbit. It worked on 20.005 and 40.002 MHZ being monitored by amateur radio operators. It continued transmitting signals for 21 days until its batteries ran out on 26 October 1957. Sputnik 1 burned up while entering the earth's orbit on 4 January 1958. It was travelling at a speed of 70 million kilometres. It spent 3 months in orbit.|